Doors and Windows - window furniture

I need to replace several, or all, of the window fittings in my house.Despite it being a new house the handles and casement fasteners are starting to break, due to poor die casting.The problem is that the windows (double glazed) have very little 'flat' on them- they are only approx. 18mm wide before the quadrant moulding starts.This means standard window furniture can't be fitted.I have tried looking on the 'net,magnets etc, all with no success.
Help very gratefully received!
Gads

Have no idea what you are talking about. Window problem, decoration problem, where are you??? Names on the windows???

Have no idea what you are talking about. Window problem, decoration problem, where are you??? Names on the windows???
The clue is in the title 'window furniture' I need non standard window furniture, that has been manufactured for these windows specifically.There are no names on the windows, and the builder has gone into liquidation.If you don't understand what I mean take a look at your own casement fasteners.See the little plate that anchors the fastener? That is too large to fit on my casement- the'flat' is very narrow, then goes into a quadrant moulding.The same is true of the fastener's keeper.

Not sure what country you're from, or if English is your first language, but the word "furniture" is understood in the USA to mean tables, desks, chairs, etc. I also have no idea what "window furniture" would mean.

By the text in your question, I'm guessing you need new window hardware? I've read your question several times, but don't know exactly what you are asking help in finding.

If you would like to post some pictures, they can be uploaded to a website (either your own or a file sharing website like photobucket) and then the link to the pictures can be copied and pasted here. Maybe a picture of the problem would make it crystal clear.

Window furniture is window hardware in other parts of the world. My guess is gadusmorhua (aka “Atlantic Cod”) is either a UK transplant or from the UK or Europe. Somehow, “Atlantic Cod” doesn't fit “down under” on the pacific side.

Still guessing, it seems that our friend has casement windows, (frame material unknown), and that the hardware leaves something to be desired. 18mm translates to about 3/4”, and that's indicative of a narrow style casement. The other clew is “quadrant molding” for stickings.

I'll get to the answer in a moment, but first a commercial message. Gadusmorhua, even though you may be capable, JB and XS are pros and valuable resources. Either may save your butt sometime. It's up to you to present info that can be disseminated. When crossing cultures it's wise to be as explicit as possible, and use terms universally understood.

In case you're wondering, I don't do windows (bad pun intended). I leave glazing systems to the engineering department and glazing subcontractors. Since you probably deem yourself capable this is your chance to prove it. C.R. Laurance is a wholesaler to the glazing industry.
They play on the world stage (North America, Europe, Pacific Rim). It's highly likely that they have what you need, but you cannot buy from them, and with multiple catalogs, their site is difficult to traverse. Find what you need, ask them for the name of a local retailer.

Could I be wrong? It's been known to happen.

Sorry,I had no idea Americans used this forum.English is,indeed, my first language (I took a first in Eng. Lit.) Window (or door) furniture is a common architectural term- 'furniture' is not limited to tables and chairs,its etymology is from furnish, to bestow a room or building with a fitting or object. I agree,an image would have made life easier, but I left my camera in my holiday home.
Fortunately' I made myself understood to a junior architect,who has given me the name of an architectural ironmongers in the east end (of London) who should be able to help me.I shall post their details when I've discovered if they have a retail business.
Thanks for your attempts to help.
Gads